I would suggest trying to find a copy of "How To Make MULTI-BLADE FOLDING KNIVES," it is written by Eugene Shadley and Terry Davis. It will explain the workings of a slip joint. They are a different beast. I make knives just for fun and the first knives I made were slip joints, just stupid I guess. I to this day have never seen another person grind. Don't get down on yourself, because if I can do this pretty much anybody can
Larry
Larry